<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title></title>
  </head>
  <body>
    <!-- 准备好一个容器 -->
    <div id="test"></div>

    <!-- 引入react 核心库 -->
    <script
      type="text/javascript"
      src="../../react-js/react.development.js"
    ></script>
    <!-- 引入react-dom 用于支持react操作dom -->
    <script
      type="text/javascript"
      src="../../react-js/react-dom.development.js"
    ></script>
    <!-- 引入babel 用于jsx转为js -->
    <script type="text/javascript" src="../../react-js/babel.min.js"></script>

    <!-- 引入prop-types，用于对组件标签属性进行限制 -->
    <script type="text/javascript" src="../../react-js/prop-types.js"></script>

    <script type="text/babel">
      // 1.创建组件
      class Person extends React.Component {
        // 对标签属性进行类型，必要性的限制
        static propTypes = {
          name: PropTypes.string.isRequired, //限制name必传，且为字符串
          age: PropTypes.number, //限制age为数值
          sex: PropTypes.string, //限制sex为字符串
          speak: PropTypes.func, //限制speak为函数
        };
        // 指定默认标签属性值
        static defaultProps = {
          sex: '男', //sex默认值为男
          age: 18, //age默认值为18
        };
        render() {
          // props是只读的
          const { name, age, sex } = this.props;
          // this.props.name = 'jack'; //此行代码会报错，因为props是只读的
          return (
            <ul>
              <li>姓名：{name}</li>
              <li>年龄：{age + 1}</li>
              <li>性别：{sex}</li>
            </ul>
          );
        }
      }

      // 2.渲染组件到页面
      ReactDOM.render(
        <Person name='jerry' speak={speak} />,
        document.getElementById('test')
      );

      function speak() {
        console.log('我说话了');
      }
    </script>
  </body>
</html>
